Pass the set of attributes to customize the campaign. For example, {'FNAME':'Joe', 'LNAME':'Doe'}. It's considered only if campaign is in New Template Language format.
sender
Sender details.
htmlUrl
URL of the HTML content. Required if html_content is empty.
replyTo
Reply-to email address.
subject
Subject of the campaign.
toField
To field personalization (e.g., {FNAME} {LNAME}).
subjectA
Subject for A variant in A/B test.
subjectB
Subject for B variant in A/B test.
Observable output
dataobject
Required
Data from the action execution
error
Error if any occurred during the execution of the action
successfulboolean
Required
Whether or not the action execution was successful or not